public class GMCKEnnel
{      
   public static void main(String[] Args)
   {
      GMCDog dog1 = new GMCDog();
      GMCDog dog2 = new GMCDog("Lulu");
      GMCDog dog3 = new GMCDog(8);
      GMCDog dog4 = new GMCDog("Nick", 9);
      
      System.out.println(dog1.toString());
      System.out.println(dog2.toString());
      System.out.println(dog3.toString());
      System.out.println(dog4.toString());
   }
}